SAN FRANCISCO, CA, Square, the company revolutionizing everyday transactions between buyers and sellers, announced today that it has secured $100 million in Series C financing. The round was led by new Square investor Kleiner Perkins Caufield and Byers with participation from Tiger Global Management, LLC.

Square launched in early 2010 as an innovative way for individuals and businesses to accept payments on their mobile devices using an elegant and easy-to-use card reader and application. The company has seen widespread adoption since its launch and helped hundreds of thousands of businesses across the country to grow with its free hardware.

"Square has a great product with extensibility which we believe has the potential to have a lasting impact on how people make payments," said Mary Meeker, Partner at KPCB. "Square's product is fast, easy and fun for both consumers and vendors; a small business can be up and running within minutes."

"Square is eager to continue our momentum and we are proud to have the support and expertise of KPCB among our team of investors and advisors," said Jack Dorsey, Square CEO. "Our goal is to empower everyone to accept payments anywhere, and we are on course to accelerate our growth in a meaningful way."

Square currently offers three products; the Square reader, register and card case. The Square reader takes only minutes to set up and enables anyone to accept payments anytime and anywhere on their iPhone, iPad and Android phones. The Square register for iPad serves as a full point of sale system for businesses to accept payments, track inventory, and share menu and location information. The Square card case is the neighborhood way to pay that enables individuals to open a tab at their favorite local merchants, store digital receipts, and browse nearby directory and menu listings.

Mary Meeker will be joining Square's board on behalf of KPCB. Square also added two new board members earlier this month; economist Larry Summers and Vinod Khosla, Founder of Khosla Ventures.